Technical Articles
Improving polyurethane dispersions using biobased technology
IntroductionPolyurethanes have been used for many years to produce high performance materials such as solvent-borne coatings. However, though possible to formulate water-borne polyurethane systems, the widely used adipate polyester backbones often cause problems, such as reduction in storage stability and hydrolytic resistance. Additionally the water evaporation rate of polyurethane dispersions...
Mixing heads are where all modern polyurethanes first see the light of day, whether these are used in the soft or hard foam sector, in in-mould coating, for manufacturing advanced composites or for innovative spray methods. They have therefore an extremely important role to play in PUR processing. This paper describes the state of the art using examples from some recent products developed...
